J/A+A/594/A77ivo://CDS.VizieR/J/A+A/594/A77doi:10.26093/cds/vizier.35940077CDSDi Teodoro E.M.Fraternali F.Miller S.2016-10-14T08:05:24Z2016-10-14T09:04:05ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgalaxiesgalaxy-kinematicsThe study of the evolution of star-forming galaxies requires the determination of accurate kinematics and scaling relations out to high redshift. In this paper we select a sample of 18 galaxies at z~1, observed in the H{alpha} emission-line with KMOS, to derive accurate kinematics using a novel 3D analysis technique. We use the new code 3DBarolo that models the galaxy emission directly in the 3D observational space, without the need to extract kinematic maps. This technique's major advantage is that it is not affected by beam smearing and thus it enables the determination of rotation velocity and intrinsic velocity dispersion, even at low spatial resolution. We find that: 1) the rotation curves of these z~1 galaxies rise very steeply within few kiloparsecs and remain flat out to the outermost radius and 2) the H{alpha} velocity dispersions are low, ranging from 15 to 40km/s, which leads to V/{sigma}=3-10. These characteristics are similar to those of disc galaxies in the local Universe. Finally, we also report no significant evolution of the stellar-mass Tully-Fisher relation. Our results show that disc galaxies are kinematically mature and rotation-dominated already at z~1.2016A&A...594A..77Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/594/A77CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/594/A77https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/594/A77http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/594/A77https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/594/A77https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/594/A77http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/594/A77GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/594/A77/tab1+list (sample of 18 disc galaxies at z~1 analyzed (table 1) and datacube information)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/594/A77/tab1+list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/594/A77/tab1+list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/594/A77/tab1+list?GETtext/xml+votable180.050000true53.124375-27.75569440.0055555555555555566/17679 17690 27256 27258 35935https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/594/A77?format=asciidefaultJ/A+A/594/A77/tab1+listsample of 18 disc galaxies at z~1 analyzed (table 1) and datacube informationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintNzNumber of pixels along Z-axismeta.numberintObs.dateObservation date (YYYY-MM-DDThh:mm:ss.sss)time.epoch;obscharbWAVELower value of wavelength intervalumem.wl;stat.mindoubleBWAVEUpper value of wavelength intervalumem.wl;stat.maxdoubledWAVEWavelength resolutionumpos.angResolutiondoublesizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitscharSeqSequential numbermeta.recordintNameGalaxy name adopted in the main survey (KROSS or KMOS3D)meta.id;meta.maincharn_Name[W] Note on Name (1)meta.notecharFieldField nameobs.fieldcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainzSpectroscopic redshiftsrc.redshiftfloatlogM*Stellar mass (2)log(solMass)phys.massfloate_logM*rms uncertainty on logM*log(solMass)stat.errorfloatSFRStar formation rate (3)solMass/yrphys.SFRfloatn_SFR[1] Note on SFR (1)meta.notechariEstimated inclination angledegsrc.orbital.inclination;pos.posAngintVflatVelocity of the flat part of the rotation curve (4)km/smeta.id.part;phys.veloc;obs.calib.flatintE_VflatError on Vflat (upper value)km/sstat.error;stat.maxinte_VflatError on Vflat (lower value)km/sstat.errorint<sigmaHa>Intrinsic H{alpha} velocity dispersion averaged over the entire galaxy disc as derived in this workkm/sphys.veloc.dispersion;spect.lineinte_<sigmaHa>rms uncertainty on <sigmaHa>km/sstat.errorint